Output error dft() function.

I am trying to use following code, but it gives error. Error message is like : OpenCV Error: Assertion failed (dims <= 2 && data && (unsigned)i0 < (unsigned)si ze.p[0] && (unsigned)(i1DataType<_Tp>::channels) < (unsigned)(size.p[1]channel s()) && ((((sizeof(size_t)<<28)|0x8442211) >> ((DataType<_Tp>::depth) & ((1 << 3 ) - 1))*4) & 15) == elemSize1()) in unknown function, file c:\program files (x86 )\opencv2.2\include\opencv2\core\mat.hpp, line 517

My code is given below:

Code:

---

int main(.....)
{
vector<double>pdf_vector;
//read data from file and put it in pdf_vector.
vector<double>all_vector;
Mat dft_input_vector(pdf_vector);
Mat dft_output_vector;
dft(dft_input_vector, dft_output_vector);

for(i=0;i<1;i++)
{
  for(j=0;j<pdf_vector.size ();j++)
    {
      all_vector.push_back (dft_output_vector.at <float>(i,j));
    } 
}

.................
}

---

Revised code would be
int main(.....)
{
vector<double>pdf_vector;
//read data from file and put it in pdf_vector.
vector<double>all_vector;
Mat dft_input_vector(pdf_vector);
Mat dft_output_vector;
dft(dft_input_vector, dft_output_vector);

for(i=0;i<pdf_vector.size ();i++)
{
for(j=0;j<1;j++)
{
all_vector.push_back (dft_output_vector.at <double>(i,j));
}
}

.................
}

Quote:

---

Originally Posted by nihad

Revised code would be

Code:

---

for(i=0;i<pdf_vector.size ();i++)
{
  for(j=0;j<1;j++)
    {
      all_vector.push_back (dft_output_vector.at <double>(i,j));
    } 
}

---

.................
}

---

Why do you need so strange "loop"? Why not just write

Code:

---

for(i=0;i<pdf_vector.size ();i++)
{
      all_vector.push_back (dft_output_vector.at <double>(i, 0));
}

---

line 517 in matt.hpp is part of the at method. So the problem is with dft_output_vector.at

Code:

---

all_vector.push_back (dft_output_vector.at <double>(i,j));

---

You'll need to debug the code to find the reason.